Olympus SP-500 UZ vs. SP 510-UZ

[JenRing]

Any pros/cons for or against either version of this camera? Important features for me are basic point and shoot capability, in-camera editing if possible, strong zoom, fast operation, AF assist for fast focusing, LONG battery life (preferably with niMH AA's). They seem to compare well but the new version has image stabilizaton where the 500 doesn't. Does the 510 have AF assist? I can't tell on the specs anywhere.